AKD4665A-A Datasheet, PDF (3/39 Pages) Asahi Kasei Microsystems – 20bit CODEC with built-in Input PGA and Headphone Amplifier

ASAHI KASEI
[AKD4665A-A]
(1) Evaluation of loop-back mode (Default)
Nothing should be connected to PORT3. PORT1(TORX141), or X’tal mode of the AK4114 is used.
When an external clock through an RCA connector (J10: MCLK) is supplied, short JP12 (XTI). JP13 (EXT) and
R28 should be properly selected in order to much the output impedance of the clock generator. Then X’tal(X1)
and capacitance (C35,C36) should be removed.
JP12
XTI
JP19
JP14
DIR_MCLK DIR_BICK
JP15
BICK_INV
JP16
DIR_LRCK
JP18
SDTI
JP17
SDTO
THR INV
ADC DIR
(2) Evaluation of using DIR of AK4114 (opt-connector)
PORT1(TORX141), is used. DIR generates MCLK, BICK, LRCK and SDTI from the received data through
optical connector (TORX141). Used for the evaluation using CD test disk. Nothing should be connected to
PORT3.
JP12
XTI
JP19
JP14
DIR_MCLK DIR_BICK
JP15
BICK_INV
JP16
DIR_LRCK
JP18
SDTI
JP17
SDTO
THR INV
ADC DIR
(3) Evaluation of using DIT of AK4114 (opt-connector)
PORT1(TORX141) and PORT2(TOTX141), or X’tal mode of the AK4114 and PORT2(TOTX141) is used.
DIT generates audio bi-phase signal from received data and which is output through optical connector
(TOTX141). It is possible to connect AKM’s D/A converter evaluation boards on the digital-amplifier which
equips DIR input.
Nothing should be connected to PORT3.
When an external clock through a RCA connector (J10: MCLK) is supplied, short JP12 (XTI). JP13 (EXT) and
R28 should be properly selected in order to much the output impedance of the clock generator. Then X’tal(X1)
and capacitance (C35,C36) should be removed.
JP12
XTI
JP19
JP14
DIR_MCLK DIR_BICK
JP15
BICK_INV
JP16
DIR_LRCK
JP18
SDTI
JP17
SDTO
THR INV
ADC DIR
(4) All interface signals including master clock are fed externally.
When all interface signals through PORT3 are supplied, the jumper pins should be set to the following.
JP12
XTI
JP19
JP14
DIR_MCLK DIR_BICK
JP15
BICK_INV
JP16
DIR_LRCK
JP18
SDTI
JP17
SDTO
THR INV
ADC DIR
<KM082201>
-3-
2006/05